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Finding the Fourth Proportional to 86,953.70, 130,430.55 and 67,246.40

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Solution

The fourth proportional to 86,953.70, 130,430.55 and 67,246.40 is: 100,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,953.70 : 130,430.55 = 67,246.40 : x
  2. Step 2: Convert to fraction form
    86,953.70/130,430.55 = 67,246.40/x
  3. Step 3: Cross multiply
    86,953.70x = 130,430.55 × 67,246.40
  4. Step 4: Simplify right side
    86,953.70x = 8,770,984,937.52
  5. Step 5: Solve for x
    x = 8,770,984,937.52/86,953.70
  6. Step 6: Final answer
    x = 100,869.60

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